74LS122

SN74LS122 SN74LS123 Retriggerable Monostable Multivibrators These dc triggered multivibrators feature pulse width control by three methods. The basic pulse width is programmed by selection of external resistance and capacitance values. The LS122 has an internal timing resistor that allows the circuits to be used with only an external capacitor. Once triggered, the basic pulse width may be extended by retriggering the gated low-level-active (A) or high-level-active (B) inputs, or be reduced by use of the overriding clear. Overriding Clear Terminates Output Pulse Compensated for VCC and Temperature Variations DC Triggered from Active-High or Active-Low Gated Logic Inputs Retriggerable for Very Long Output Pulses, up to 100% Duty Cycle Internal Timing Resistors on LS122 http://onsemi.com LOW POWER SCHOTTKY 14 1 PLASTIC N SUFFIX CASE 646 GUARANTEED OPERATING RANGES Symbol VCC TA IOH IOL Rext Cext Rext/Cext Parameter Supply Voltage Operating Ambient Temperature Range Output Current – High Output Current – Low External Timing Resistance External Capacitance Wiring Capacitance at Rext/Cext Terminal 5.0 Min 4.75 0 Typ 5.0 25 Max 5.25 70 – 0.4 8.0 260 No Restriction 50 pF Unit V °C mA mA kW 16 1 14 1 SOIC D SUFFIX CASE 751A PLASTIC N SUFFIX CASE 648 16 1 SOIC D SUFFIX CASE 751B ORDERING INFORMATION Device SN74LS122N SN74LS122D SN74LS123N SN74LS123D Package 14 Pin DIP 14 Pin 16 Pin DIP 16 Pin Shipping 2000 Units/Box 2500/Tape & Reel 2000 Units/Box 2500/Tape & Reel ©...